Video signal processing method and device

Abstract

According to the present invention, there is provided a video signal processing method of dividing an input image on a per-block basis for encoding, the method including: determining, at a division determination step, whether to divide a current block; dividing, at a block division step, the current block into multiple sub blocks on the basis of the determination; generating block division information on division of the current block; and encoding, at an encoding step, the block division information, the current block, or the sub blocks. Examples of division of the block according to the present invention include division using N-ary tree structures, such as the quad tree structure, the binary tree structure, and / or the triple tree structure.

Description

TECHNICAL FIELD[0001]The present invention relates to a video signal processing method and device.BACKGROUND ART[0002]Recently, demands for high-resolution and high-quality images such as high definition (HD) images and ultra-high definition (UHD) images have increased in various application fields. However, higher resolution and quality image data has increasing amounts of data in comparison with conventional image data. Therefore, when transmitting image data by using a medium such as conventional wired and wireless broadband networks, or when storing image data by using a conventional storage medium, costs of transmitting and storing increase. In order to solve these problems occurring with an increase in resolution and quality of image data, high-efficiency image compression techniques may be utilized.[0003]Image compression technology includes various techniques, including: an inter-prediction technique of predicting a pixel value included in a current picture from a previous o...

AI Technical Summary

Benefits of technology

[0058]The present invention may provide the method and device for encoding / decoding an image.

[0059]Also, according to the present invention, a block is adaptively divided on the basis of various types of tree structures including a quad tree structure, a binary tree structure, and / or a triple tree structure, thereby enhancing encoding efficiency.

[0060]Also, according to the present invention, division information of a block according to adaptive division of an input image is efficiently signaled, thereby enhancing encoding efficiency.

[0061]Also, according to the present invention, transforming and / or filtering is efficiently performed on a block in an arbitrary shape according to adaptive division of an input image, thereby enhancing encoding efficiency.

[0062]Also, according to the present invention, noise that occurs at the corner of a block included in a video signal which is decoded on a per-block basis is effectively detected.

[0063]Also, according to the present invention, compensation is effective for noise that occurs at the corner of a block of a video signal which is decoded on a per-block basis.

Problems solved by technology

Therefore, when transmitting image data by using a medium such as conventional wired and wireless broadband networks, or when storing image data by using a conventional storage medium, costs of transmitting and storing increase.

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